What is a tax ID number? It's a unique nine-digit number issued by the Social Security Administration or the IRS to anyone ...

A tax identification number (TIN) is a unique nine-digit number issued by the Social Security Administration or the Internal Revenue Service to anyone who pays taxes (personal or business). Your TIN ...

Like any individual, a business needs an identifier to separate it from every other company. Most small business owners get a separate tax identification number (TIN) in order to conduct business, ...

Companies, like people, are usually known by their names, but people and companies both have other types of identification, often issued by government agencies in the form of identification numbers.

Janet Berry-Johnson, CPA, is a freelance writer with a background in accounting and income tax planning and preparation for individuals and small businesses. Her work has appeared in Business Insider ...

Troy Segal is an editor and writer. She has 20+ years of experience covering personal finance, wealth management, and business news. Somer G. Anderson is CPA, doctor of accounting, and an accounting ...

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Pete Rathburn is a copy editor and fact-checker with expertise in economics and personal ...